Аңдатпа
This article describes a new approach to optimizing the parameters of mechanical hole machining, which solves the problem of compromise between various criteria, such as machining time, tool durability, and surface quality. Traditional optimization methods, as shown in the study, usually focus on a single parameter, which inevitably leads to deterioration in others. For example, increasing the cutting speed to reduce machining time causes rapid tool wear, while reducing parameters to improve surface quality significantly increases time and production costs. To overcome these shortcomings, a methodology based on weighted multi-criteria analysis was developed. The methodology includes several stages: data collection, formation of objective functions, definition of constraints, normalization of criteria, and selection of an optimization method. A key element is the use of weighting coefficients, which allow the methodology to be adapted to specific production priorities. The study was conducted using a specific example of optimizing hole drilling in 45 steel. Weighting coefficients were set, with the greatest weight given to processing time (0.5), followed by roughness (0.3) and tool resistance (0.2). As a result, the following parameters were recognized as optimal: cutting speed vc = 22 m/min and feed fz = 0.2 mm/rev. With these values, the processing time was reduced from 37.9 to 28.7 seconds, while tool durability decreased from 275.2 to 176.4 μm. This clearly demonstrates that the method has found a compromise solution that allows reducing the time without critically compromising tool durability